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ed759a08 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
6ec6c43b | 20 | #include <config.h> |
bc7be4a9 | 21 | #include <string.h> |
ed759a08 BV |
22 | #include "protocol.h" |
23 | ||
a8806f03 BV |
24 | #define USB_CONN "1041.8101" |
25 | #define VENDOR "Kecheng" | |
26 | #define USB_INTERFACE 0 | |
a8806f03 | 27 | |
f254bc4b | 28 | static const uint32_t devopts[] = { |
a8806f03 | 29 | SR_CONF_SOUNDLEVELMETER, |
a8806f03 | 30 | SR_CONF_CONTINUOUS, |
5827f61b BV |
31 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, |
32 | SR_CONF_SAMPLE_INTERVAL | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
33 | SR_CONF_DATALOG | SR_CONF_GET, | |
34 | SR_CONF_SPL_WEIGHT_FREQ | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
35 | SR_CONF_SPL_WEIGHT_TIME | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
36 | SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
bc7be4a9 BV |
37 | }; |
38 | ||
df035528 | 39 | SR_PRIV const uint64_t kecheng_kc_330b_sample_intervals[][2] = { |
bc7be4a9 BV |
40 | { 1, 8 }, |
41 | { 1, 2 }, | |
42 | { 1, 1 }, | |
43 | { 2, 1 }, | |
44 | { 5, 1 }, | |
45 | { 10, 1 }, | |
46 | { 60, 1 }, | |
47 | }; | |
48 | ||
49 | static const char *weight_freq[] = { | |
50 | "A", | |
51 | "C", | |
52 | }; | |
53 | ||
54 | static const char *weight_time[] = { | |
55 | "F", | |
56 | "S", | |
57 | }; | |
58 | ||
59 | static const char *data_sources[] = { | |
60 | "Live", | |
61 | "Memory", | |
a8806f03 BV |
62 | }; |
63 | ||
ed759a08 | 64 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info; |
ed759a08 | 65 | |
4f840ce9 | 66 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
ed759a08 BV |
67 | { |
68 | return std_init(sr_ctx, di, LOG_PREFIX); | |
69 | } | |
70 | ||
4f840ce9 ML |
71 | static int scan_kecheng(struct sr_dev_driver *di, |
72 | struct sr_usb_dev_inst *usb, char **model) | |
a8806f03 BV |
73 | { |
74 | struct drv_context *drvc; | |
75 | int len, ret; | |
76 | unsigned char cmd, buf[32]; | |
77 | ||
41812aca | 78 | drvc = di->context; |
a8806f03 BV |
79 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
80 | return SR_ERR; | |
81 | ||
82 | cmd = CMD_IDENTIFY; | |
83 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, &cmd, 1, &len, 5); | |
84 | if (ret != 0) { | |
85 | libusb_close(usb->devhdl); | |
86 | sr_dbg("Failed to send Identify command: %s", libusb_error_name(ret)); | |
87 | return SR_ERR; | |
88 | } | |
89 | ||
90 | ret = libusb_bulk_transfer(usb->devhdl, EP_IN, buf, 32, &len, 10); | |
91 | if (ret != 0) { | |
92 | libusb_close(usb->devhdl); | |
93 | sr_dbg("Failed to receive response: %s", libusb_error_name(ret)); | |
94 | return SR_ERR; | |
95 | } | |
96 | ||
97 | libusb_close(usb->devhdl); | |
98 | usb->devhdl = NULL; | |
99 | ||
100 | if (len < 2 || buf[0] != (CMD_IDENTIFY | 0x80) || buf[1] > 30) { | |
101 | sr_dbg("Invalid response to Identify command"); | |
102 | return SR_ERR; | |
103 | } | |
104 | ||
105 | buf[buf[1] + 2] = '\x0'; | |
106 | *model = g_strndup((const gchar *)buf + 2, 30); | |
a8806f03 BV |
107 | |
108 | return SR_OK; | |
109 | } | |
110 | ||
4f840ce9 | 111 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
ed759a08 BV |
112 | { |
113 | struct drv_context *drvc; | |
a8806f03 BV |
114 | struct dev_context *devc; |
115 | struct sr_dev_inst *sdi; | |
a8806f03 BV |
116 | GSList *usb_devices, *devices, *l; |
117 | char *model; | |
ed759a08 BV |
118 | |
119 | (void)options; | |
120 | ||
41812aca | 121 | drvc = di->context; |
ed759a08 BV |
122 | drvc->instances = NULL; |
123 | ||
a8806f03 BV |
124 | devices = NULL; |
125 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_CONN))) { | |
126 | /* We have a list of sr_usb_dev_inst matching the connection | |
127 | * string. Wrap them in sr_dev_inst and we're done. */ | |
128 | for (l = usb_devices; l; l = l->next) { | |
4f840ce9 | 129 | if (scan_kecheng(di, l->data, &model) != SR_OK) |
a8806f03 | 130 | continue; |
aac29cc1 | 131 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
132 | sdi->status = SR_ST_INACTIVE; |
133 | sdi->vendor = g_strdup(VENDOR); | |
134 | sdi->model = model; /* Already g_strndup()'d. */ | |
a8806f03 BV |
135 | sdi->driver = di; |
136 | sdi->inst_type = SR_INST_USB; | |
137 | sdi->conn = l->data; | |
5e23fcab | 138 | sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL"); |
f57d8ffe | 139 | devc = g_malloc0(sizeof(struct dev_context)); |
a8806f03 BV |
140 | sdi->priv = devc; |
141 | devc->limit_samples = 0; | |
bc7be4a9 BV |
142 | /* The protocol provides no way to read the current |
143 | * settings, so we'll enforce these. */ | |
144 | devc->sample_interval = DEFAULT_SAMPLE_INTERVAL; | |
145 | devc->alarm_low = DEFAULT_ALARM_LOW; | |
146 | devc->alarm_high = DEFAULT_ALARM_HIGH; | |
147 | devc->mqflags = DEFAULT_WEIGHT_TIME | DEFAULT_WEIGHT_FREQ; | |
148 | devc->data_source = DEFAULT_DATA_SOURCE; | |
85ed4ab3 | 149 | devc->config_dirty = FALSE; |
bc7be4a9 BV |
150 | |
151 | /* TODO: Set date/time? */ | |
a8806f03 BV |
152 | |
153 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
154 | devices = g_slist_append(devices, sdi); | |
155 | } | |
156 | g_slist_free(usb_devices); | |
157 | } else | |
158 | g_slist_free_full(usb_devices, g_free); | |
ed759a08 BV |
159 | |
160 | return devices; | |
161 | } | |
162 | ||
4f840ce9 | 163 | static GSList *dev_list(const struct sr_dev_driver *di) |
ed759a08 | 164 | { |
41812aca | 165 | return ((struct drv_context *)(di->context))->instances; |
ed759a08 BV |
166 | } |
167 | ||
ed759a08 BV |
168 | static int dev_open(struct sr_dev_inst *sdi) |
169 | { | |
4f840ce9 | 170 | struct sr_dev_driver *di = sdi->driver; |
a8806f03 BV |
171 | struct drv_context *drvc; |
172 | struct sr_usb_dev_inst *usb; | |
173 | int ret; | |
174 | ||
41812aca | 175 | if (!(drvc = di->context)) { |
a8806f03 BV |
176 | sr_err("Driver was not initialized."); |
177 | return SR_ERR; | |
178 | } | |
179 | ||
180 | usb = sdi->conn; | |
ed759a08 | 181 | |
a8806f03 BV |
182 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) |
183 | return SR_ERR; | |
ed759a08 | 184 | |
85ed4ab3 BV |
185 | if ((ret = libusb_set_configuration(usb->devhdl, 1))) { |
186 | sr_err("Failed to set configuration: %s.", libusb_error_name(ret)); | |
187 | return SR_ERR; | |
188 | } | |
189 | ||
a8806f03 BV |
190 | if ((ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE))) { |
191 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
192 | return SR_ERR; | |
193 | } | |
ed759a08 BV |
194 | sdi->status = SR_ST_ACTIVE; |
195 | ||
a8806f03 | 196 | return ret; |
ed759a08 BV |
197 | } |
198 | ||
199 | static int dev_close(struct sr_dev_inst *sdi) | |
200 | { | |
4f840ce9 | 201 | struct sr_dev_driver *di = sdi->driver; |
85ed4ab3 | 202 | struct dev_context *devc; |
a8806f03 BV |
203 | struct sr_usb_dev_inst *usb; |
204 | ||
41812aca | 205 | if (!di->context) { |
a8806f03 BV |
206 | sr_err("Driver was not initialized."); |
207 | return SR_ERR; | |
208 | } | |
209 | ||
210 | usb = sdi->conn; | |
ed759a08 | 211 | |
a8806f03 BV |
212 | if (!usb->devhdl) |
213 | /* Nothing to do. */ | |
214 | return SR_OK; | |
ed759a08 | 215 | |
85ed4ab3 BV |
216 | /* This allows a frontend to configure the device without ever |
217 | * doing an acquisition step. */ | |
218 | devc = sdi->priv; | |
219 | if (!devc->config_dirty) | |
220 | kecheng_kc_330b_configure(sdi); | |
221 | ||
a8806f03 BV |
222 | libusb_release_interface(usb->devhdl, USB_INTERFACE); |
223 | libusb_close(usb->devhdl); | |
224 | usb->devhdl = NULL; | |
ed759a08 BV |
225 | sdi->status = SR_ST_INACTIVE; |
226 | ||
227 | return SR_OK; | |
228 | } | |
229 | ||
4f840ce9 | 230 | static int cleanup(const struct sr_dev_driver *di) |
ed759a08 | 231 | { |
a8806f03 BV |
232 | int ret; |
233 | struct drv_context *drvc; | |
ed759a08 | 234 | |
41812aca | 235 | if (!(drvc = di->context)) |
a8806f03 BV |
236 | /* Can get called on an unused driver, doesn't matter. */ |
237 | return SR_OK; | |
ed759a08 | 238 | |
a6630742 | 239 | ret = std_dev_clear(di, NULL); |
a8806f03 | 240 | g_free(drvc); |
a8806f03 BV |
241 | |
242 | return ret; | |
ed759a08 BV |
243 | } |
244 | ||
584560f1 | 245 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 246 | const struct sr_channel_group *cg) |
ed759a08 | 247 | { |
a8806f03 | 248 | struct dev_context *devc; |
bc7be4a9 BV |
249 | GVariant *rational[2]; |
250 | const uint64_t *si; | |
ed759a08 | 251 | |
53b4680f | 252 | (void)cg; |
d3c74a6f | 253 | |
a8806f03 | 254 | devc = sdi->priv; |
ed759a08 | 255 | switch (key) { |
a8806f03 BV |
256 | case SR_CONF_LIMIT_SAMPLES: |
257 | *data = g_variant_new_uint64(devc->limit_samples); | |
258 | break; | |
bc7be4a9 | 259 | case SR_CONF_SAMPLE_INTERVAL: |
df035528 | 260 | si = kecheng_kc_330b_sample_intervals[devc->sample_interval]; |
bc7be4a9 BV |
261 | rational[0] = g_variant_new_uint64(si[0]); |
262 | rational[1] = g_variant_new_uint64(si[1]); | |
263 | *data = g_variant_new_tuple(rational, 2); | |
264 | break; | |
265 | case SR_CONF_DATALOG: | |
85ed4ab3 BV |
266 | /* There really isn't a way to be sure the device is logging. */ |
267 | return SR_ERR_NA; | |
bc7be4a9 BV |
268 | break; |
269 | case SR_CONF_SPL_WEIGHT_FREQ: | |
270 | if (devc->mqflags & SR_MQFLAG_SPL_FREQ_WEIGHT_A) | |
271 | *data = g_variant_new_string("A"); | |
272 | else | |
273 | *data = g_variant_new_string("C"); | |
274 | break; | |
275 | case SR_CONF_SPL_WEIGHT_TIME: | |
276 | if (devc->mqflags & SR_MQFLAG_SPL_TIME_WEIGHT_F) | |
277 | *data = g_variant_new_string("F"); | |
278 | else | |
279 | *data = g_variant_new_string("S"); | |
280 | break; | |
281 | case SR_CONF_DATA_SOURCE: | |
282 | if (devc->data_source == DATA_SOURCE_LIVE) | |
283 | *data = g_variant_new_string("Live"); | |
284 | else | |
285 | *data = g_variant_new_string("Memory"); | |
286 | break; | |
ed759a08 BV |
287 | default: |
288 | return SR_ERR_NA; | |
289 | } | |
290 | ||
a8806f03 | 291 | return SR_OK; |
ed759a08 BV |
292 | } |
293 | ||
584560f1 | 294 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 295 | const struct sr_channel_group *cg) |
ed759a08 | 296 | { |
4f840ce9 | 297 | struct sr_dev_driver *di = sdi->driver; |
a8806f03 | 298 | struct dev_context *devc; |
bc7be4a9 BV |
299 | uint64_t p, q; |
300 | unsigned int i; | |
301 | int tmp, ret; | |
302 | const char *tmp_str; | |
ed759a08 | 303 | |
53b4680f | 304 | (void)cg; |
d3c74a6f | 305 | |
ed759a08 BV |
306 | if (sdi->status != SR_ST_ACTIVE) |
307 | return SR_ERR_DEV_CLOSED; | |
308 | ||
41812aca | 309 | if (!di->context) { |
a8806f03 BV |
310 | sr_err("Driver was not initialized."); |
311 | return SR_ERR; | |
312 | } | |
313 | ||
314 | devc = sdi->priv; | |
ed759a08 BV |
315 | ret = SR_OK; |
316 | switch (key) { | |
a8806f03 BV |
317 | case SR_CONF_LIMIT_SAMPLES: |
318 | devc->limit_samples = g_variant_get_uint64(data); | |
319 | sr_dbg("Setting sample limit to %" PRIu64 ".", | |
320 | devc->limit_samples); | |
321 | break; | |
bc7be4a9 BV |
322 | case SR_CONF_SAMPLE_INTERVAL: |
323 | g_variant_get(data, "(tt)", &p, &q); | |
df035528 BV |
324 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
325 | if (kecheng_kc_330b_sample_intervals[i][0] != p || kecheng_kc_330b_sample_intervals[i][1] != q) | |
bc7be4a9 BV |
326 | continue; |
327 | devc->sample_interval = i; | |
85ed4ab3 | 328 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
329 | break; |
330 | } | |
df035528 | 331 | if (i == ARRAY_SIZE(kecheng_kc_330b_sample_intervals)) |
bc7be4a9 BV |
332 | ret = SR_ERR_ARG; |
333 | break; | |
334 | case SR_CONF_SPL_WEIGHT_FREQ: | |
335 | tmp_str = g_variant_get_string(data, NULL); | |
336 | if (!strcmp(tmp_str, "A")) | |
337 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
338 | else if (!strcmp(tmp_str, "C")) | |
339 | tmp = SR_MQFLAG_SPL_FREQ_WEIGHT_C; | |
340 | else | |
341 | return SR_ERR_ARG; | |
342 | devc->mqflags &= ~(SR_MQFLAG_SPL_FREQ_WEIGHT_A | SR_MQFLAG_SPL_FREQ_WEIGHT_C); | |
343 | devc->mqflags |= tmp; | |
85ed4ab3 | 344 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
345 | break; |
346 | case SR_CONF_SPL_WEIGHT_TIME: | |
347 | tmp_str = g_variant_get_string(data, NULL); | |
348 | if (!strcmp(tmp_str, "F")) | |
349 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_F; | |
350 | else if (!strcmp(tmp_str, "S")) | |
351 | tmp = SR_MQFLAG_SPL_TIME_WEIGHT_S; | |
352 | else | |
353 | return SR_ERR_ARG; | |
354 | devc->mqflags &= ~(SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_TIME_WEIGHT_S); | |
355 | devc->mqflags |= tmp; | |
85ed4ab3 | 356 | devc->config_dirty = TRUE; |
bc7be4a9 BV |
357 | break; |
358 | case SR_CONF_DATA_SOURCE: | |
359 | tmp_str = g_variant_get_string(data, NULL); | |
360 | if (!strcmp(tmp_str, "Live")) | |
361 | devc->data_source = DATA_SOURCE_LIVE; | |
362 | else if (!strcmp(tmp_str, "Memory")) | |
363 | devc->data_source = DATA_SOURCE_MEMORY; | |
364 | else | |
365 | return SR_ERR; | |
85ed4ab3 | 366 | devc->config_dirty = TRUE; |
bc7be4a9 | 367 | break; |
ed759a08 BV |
368 | default: |
369 | ret = SR_ERR_NA; | |
370 | } | |
371 | ||
372 | return ret; | |
373 | } | |
374 | ||
584560f1 | 375 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 376 | const struct sr_channel_group *cg) |
ed759a08 | 377 | { |
bc7be4a9 BV |
378 | GVariant *tuple, *rational[2]; |
379 | GVariantBuilder gvb; | |
380 | unsigned int i; | |
ed759a08 BV |
381 | |
382 | (void)sdi; | |
53b4680f | 383 | (void)cg; |
ed759a08 | 384 | |
ed759a08 | 385 | switch (key) { |
a8806f03 | 386 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 387 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 388 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
a8806f03 | 389 | break; |
bc7be4a9 BV |
390 | case SR_CONF_SAMPLE_INTERVAL: |
391 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
df035528 BV |
392 | for (i = 0; i < ARRAY_SIZE(kecheng_kc_330b_sample_intervals); i++) { |
393 | rational[0] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][0]); | |
394 | rational[1] = g_variant_new_uint64(kecheng_kc_330b_sample_intervals[i][1]); | |
bc7be4a9 BV |
395 | tuple = g_variant_new_tuple(rational, 2); |
396 | g_variant_builder_add_value(&gvb, tuple); | |
397 | } | |
398 | *data = g_variant_builder_end(&gvb); | |
399 | break; | |
400 | case SR_CONF_SPL_WEIGHT_FREQ: | |
401 | *data = g_variant_new_strv(weight_freq, ARRAY_SIZE(weight_freq)); | |
402 | break; | |
403 | case SR_CONF_SPL_WEIGHT_TIME: | |
404 | *data = g_variant_new_strv(weight_time, ARRAY_SIZE(weight_time)); | |
405 | break; | |
406 | case SR_CONF_DATA_SOURCE: | |
407 | *data = g_variant_new_strv(data_sources, ARRAY_SIZE(data_sources)); | |
408 | break; | |
ed759a08 BV |
409 | default: |
410 | return SR_ERR_NA; | |
411 | } | |
412 | ||
a8806f03 | 413 | return SR_OK; |
ed759a08 BV |
414 | } |
415 | ||
416 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
85ed4ab3 | 417 | void *cb_data) |
ed759a08 | 418 | { |
4f840ce9 | 419 | struct sr_dev_driver *di = sdi->driver; |
bc7be4a9 BV |
420 | struct drv_context *drvc; |
421 | struct dev_context *devc; | |
85ed4ab3 BV |
422 | struct sr_datafeed_packet packet; |
423 | struct sr_datafeed_meta meta; | |
424 | struct sr_config *src; | |
bc7be4a9 | 425 | struct sr_usb_dev_inst *usb; |
85ed4ab3 | 426 | GVariant *gvar, *rational[2]; |
85ed4ab3 | 427 | const uint64_t *si; |
7f22cd95 | 428 | int req_len, buf_len, len, ret; |
85ed4ab3 | 429 | unsigned char buf[9]; |
ed759a08 BV |
430 | |
431 | if (sdi->status != SR_ST_ACTIVE) | |
432 | return SR_ERR_DEV_CLOSED; | |
433 | ||
41812aca | 434 | drvc = di->context; |
bc7be4a9 BV |
435 | devc = sdi->priv; |
436 | usb = sdi->conn; | |
437 | ||
438 | devc->cb_data = cb_data; | |
439 | devc->num_samples = 0; | |
440 | ||
85ed4ab3 BV |
441 | /* Send header packet to the session bus. */ |
442 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
443 | ||
f336618c | 444 | if (devc->data_source == DATA_SOURCE_LIVE) { |
85ed4ab3 BV |
445 | /* Force configuration. */ |
446 | kecheng_kc_330b_configure(sdi); | |
447 | ||
f336618c BV |
448 | if (kecheng_kc_330b_status_get(sdi, &ret) != SR_OK) |
449 | return SR_ERR; | |
f336618c BV |
450 | if (ret != DEVICE_ACTIVE) { |
451 | sr_err("Device is inactive"); | |
452 | /* Still continue though, since the device will | |
453 | * just return 30.0 until the user hits the button | |
454 | * on the device -- and then start feeding good | |
455 | * samples back. */ | |
456 | } | |
85ed4ab3 BV |
457 | } else { |
458 | if (kecheng_kc_330b_log_info_get(sdi, buf) != SR_OK) | |
459 | return SR_ERR; | |
7f22cd95 BV |
460 | devc->mqflags = buf[4] ? SR_MQFLAG_SPL_TIME_WEIGHT_S : SR_MQFLAG_SPL_TIME_WEIGHT_F; |
461 | devc->mqflags |= buf[5] ? SR_MQFLAG_SPL_FREQ_WEIGHT_C : SR_MQFLAG_SPL_FREQ_WEIGHT_A; | |
85ed4ab3 BV |
462 | devc->stored_samples = (buf[7] << 8) | buf[8]; |
463 | if (devc->stored_samples == 0) { | |
464 | /* Notify frontend of empty log by sending start/end packets. */ | |
465 | packet.type = SR_DF_END; | |
466 | sr_session_send(cb_data, &packet); | |
467 | return SR_OK; | |
468 | } | |
469 | ||
470 | if (devc->limit_samples && devc->limit_samples < devc->stored_samples) | |
471 | devc->stored_samples = devc->limit_samples; | |
472 | ||
473 | si = kecheng_kc_330b_sample_intervals[buf[1]]; | |
474 | rational[0] = g_variant_new_uint64(si[0]); | |
475 | rational[1] = g_variant_new_uint64(si[1]); | |
476 | gvar = g_variant_new_tuple(rational, 2); | |
477 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, gvar); | |
478 | packet.type = SR_DF_META; | |
479 | packet.payload = &meta; | |
480 | meta.config = g_slist_append(NULL, src); | |
481 | sr_session_send(devc->cb_data, &packet); | |
482 | g_free(src); | |
f336618c BV |
483 | } |
484 | ||
df035528 BV |
485 | if (!(devc->xfer = libusb_alloc_transfer(0))) |
486 | return SR_ERR; | |
487 | ||
102f1239 | 488 | usb_source_add(sdi->session, drvc->sr_ctx, 10, |
6c60facc | 489 | kecheng_kc_330b_handle_events, (void *)sdi); |
bc7be4a9 | 490 | |
85ed4ab3 BV |
491 | if (devc->data_source == DATA_SOURCE_LIVE) { |
492 | buf[0] = CMD_GET_LIVE_SPL; | |
493 | buf_len = 1; | |
494 | devc->state = LIVE_SPL_WAIT; | |
495 | devc->last_live_request = g_get_monotonic_time() / 1000; | |
496 | req_len = 3; | |
497 | } else { | |
498 | buf[0] = CMD_GET_LOG_DATA; | |
499 | buf[1] = 0; | |
500 | buf[2] = 0; | |
501 | buf_len = 4; | |
502 | devc->state = LOG_DATA_WAIT; | |
503 | if (devc->stored_samples < 63) | |
504 | buf[3] = devc->stored_samples; | |
505 | else | |
506 | buf[3] = 63; | |
507 | /* Command ack byte + 2 bytes per sample. */ | |
508 | req_len = 1 + buf[3] * 2; | |
509 | } | |
510 | ||
511 | ret = libusb_bulk_transfer(usb->devhdl, EP_OUT, buf, buf_len, &len, 5); | |
bc7be4a9 BV |
512 | if (ret != 0 || len != 1) { |
513 | sr_dbg("Failed to start acquisition: %s", libusb_error_name(ret)); | |
df035528 BV |
514 | libusb_free_transfer(devc->xfer); |
515 | return SR_ERR; | |
516 | } | |
df035528 BV |
517 | |
518 | libusb_fill_bulk_transfer(devc->xfer, usb->devhdl, EP_IN, devc->buf, | |
85ed4ab3 | 519 | req_len, kecheng_kc_330b_receive_transfer, (void *)sdi, 15); |
df035528 BV |
520 | if (libusb_submit_transfer(devc->xfer) != 0) { |
521 | libusb_free_transfer(devc->xfer); | |
bc7be4a9 BV |
522 | return SR_ERR; |
523 | } | |
ed759a08 BV |
524 | |
525 | return SR_OK; | |
526 | } | |
527 | ||
528 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
529 | { | |
85ed4ab3 BV |
530 | struct dev_context *devc; |
531 | ||
ed759a08 BV |
532 | (void)cb_data; |
533 | ||
534 | if (sdi->status != SR_ST_ACTIVE) | |
535 | return SR_ERR_DEV_CLOSED; | |
536 | ||
df035528 BV |
537 | /* Signal USB transfer handler to clean up and stop. */ |
538 | sdi->status = SR_ST_STOPPING; | |
ed759a08 | 539 | |
85ed4ab3 BV |
540 | devc = sdi->priv; |
541 | if (devc->data_source == DATA_SOURCE_MEMORY && devc->config_dirty) { | |
542 | /* The protocol doesn't have a command to clear stored data; | |
543 | * it clears it whenever new configuration is set. That means | |
544 | * we can't just configure the device any time we want when | |
545 | * it's in DATA_SOURCE_MEMORY mode. The only safe time to do | |
546 | * it is now, when we're sure we've pulled in all the stored | |
547 | * data. */ | |
548 | kecheng_kc_330b_configure(sdi); | |
549 | } | |
550 | ||
ed759a08 BV |
551 | return SR_OK; |
552 | } | |
553 | ||
554 | SR_PRIV struct sr_dev_driver kecheng_kc_330b_driver_info = { | |
555 | .name = "kecheng-kc-330b", | |
556 | .longname = "Kecheng KC-330B", | |
557 | .api_version = 1, | |
558 | .init = init, | |
559 | .cleanup = cleanup, | |
560 | .scan = scan, | |
561 | .dev_list = dev_list, | |
a6630742 | 562 | .dev_clear = NULL, |
ed759a08 BV |
563 | .config_get = config_get, |
564 | .config_set = config_set, | |
565 | .config_list = config_list, | |
566 | .dev_open = dev_open, | |
567 | .dev_close = dev_close, | |
568 | .dev_acquisition_start = dev_acquisition_start, | |
569 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 570 | .context = NULL, |
ed759a08 | 571 | }; |